Synonyms: 2(5H)-Furanone,3-methyl-5-[(2R)-2-[(1R,1'R,2S,3aR,3'aR,7aS,7'aR)-tetradecahydro-2-hydroxy-5-methoxy-3'a,4,4,7a,7'a-pentamethyl-4'-oxospiro[1H-indene-1,5'-[5H]inden]-1'-yl]propyl]-,(5R)- (9CI); 7,9-Cyclo-7,8-secolanost-24-en-26-oic acid,7,23-dihydroxy-3-methoxy-8-oxo-, g-lactone, (3a,7b,9R,23R)-;Spiro[1H-indene-1,5'-[5H]indene], 7,9-cyclo-7,8-secolanost-24-en-26-oic acidderiv.; 2(5H)-Furanone,3-methyl-5-[2-(tetradecahydro-2-hydroxy-5-methoxy-3'a,4,4,7a,7'a-pentamethyl-4'-oxospiro[1H-indene-1,5'-[5H]inden]-1'-yl)propyl]-,[1R-[1a[1'R[1R*,2(R*)],3'aR*,7'aR*],2a,3ab,5b,7aa]]-; Spiroveitchionolide